docs: upgrade doc with http-facade

Signed-off-by: moxiaoying <[email protected]>

Author: CennyMo

README.md

@@ -16,7 +16,7 @@ OpenGemini is a cloud-native distributed time series database, find more informa
 
 ## Prerequisites
 
-Compiling this project requires at least OpenJDK 17, and Maven 3.8.0 or later.
+Compiling this project requires at least OpenJDK 8, and Maven 3.8.0 or later.
 
 ## Integration
 
@@ -46,7 +46,7 @@ docker run -p 8086:8086 --name opengemini --rm opengeminidb/opengemini-server
 
 ### HTTP Engine Selection
 
-By default, the client uses the built-in HTTP engine provided by the JDK. It automatically selects the appropriate implementation based on the Java version, supporting both Java 8 and Java 11+. If needed, you can configure a different HTTP engine by specifying the `.engine` option in the `HttpClientConfig`. Please note, if a different engine is chosen, you will need to manually include the corresponding dependencies.
+OpenGeminiClient supports multiple [HTTP engines](https://github.com/openfacade/http-facade?tab=readme-ov-file#httpclient-support-engines) by leveraging [http-facade](https://github.com/openfacade/http-facade). By default, the client uses the built-in HTTP engine provided by the JDK. It automatically selects the appropriate implementation based on the Java version, supporting both Java 8 and Java 11+. If needed, you can configure a different HTTP engine by specifying the `.engine` option in the `HttpClientConfig`. Please note, if a different engine is chosen, you will need to manually include the corresponding dependencies.
 
 ## Quick Start
 

README_CN.md

@@ -16,7 +16,7 @@ OpenGemini 是一款云原生分布式时序数据库。获取更多信息，请
 
 ## 依赖
 
-- 编译本项目至少需要OpenJDK 17, Maven 3.8.0或更高版本
+- 编译本项目至少需要OpenJDK 8, Maven 3.8.0或更高版本
 
 ## 集成
 
@@ -46,7 +46,7 @@ docker run -p 8086:8086 --name opengemini --rm opengeminidb/opengemini-server
 
 ### HTTP 引擎选择
 
-默认情况下，客户端使用 JDK 自带的 HTTP 引擎，并根据 Java 版本自动选择合适的实现，支持 Java 8 和 Java 11+。如果有需要，你可以在 `HttpClientConfig` 中通过 `.engine` 选项配置不同的 HTTP 引擎。请注意，若选择不同的引擎，则需要手动添加相应的依赖。
+OpenGeminiClient利用 [http-façade](https://github.com/openfacade/http-façade) 支持了多个 [HTTP 引擎](https://github.com/openfacade/http-façade?tab=readme-ov-file#httpclient-support-engines)。默认情况下，客户端使用 JDK 自带的 HTTP 引擎，并根据 Java 版本自动选择合适的实现，支持 Java 8 和 Java 11+。如果有需要，你可以在 `HttpClientConfig` 中通过 `.engine` 选项配置不同的 HTTP 引擎。请注意，若选择不同的引擎，则需要手动添加相应的依赖。
 
 ## 快速上手